Lines Matching defs:i2c_dev
43 * An i2c_dev represents an i2c_adapter ... an I2C or SMBus master, not a
47 * The list of i2c_dev structures is parallel to the i2c_adapter lists
51 struct i2c_dev {
61 static struct i2c_dev *i2c_dev_get_by_minor(unsigned index)
63 struct i2c_dev *i2c_dev;
66 list_for_each_entry(i2c_dev, &i2c_dev_list, list) {
67 if (i2c_dev->adap->nr == index)
70 i2c_dev = NULL;
73 return i2c_dev;
76 static struct i2c_dev *get_free_i2c_dev(struct i2c_adapter *adap)
78 struct i2c_dev *i2c_dev;
86 i2c_dev = kzalloc(sizeof(*i2c_dev), GFP_KERNEL);
87 if (!i2c_dev)
89 i2c_dev->adap = adap;
92 list_add_tail(&i2c_dev->list, &i2c_dev_list);
94 return i2c_dev;
97 static void return_i2c_dev(struct i2c_dev *i2c_dev)
100 list_del(&i2c_dev->list);
102 kfree(i2c_dev);
108 struct i2c_dev *i2c_dev = i2c_dev_get_by_minor(MINOR(dev->devt));
110 if (!i2c_dev)
112 return sprintf(buf, "%s\n", i2c_dev->adap->name);
472 struct i2c_dev *i2c_dev;
474 i2c_dev = i2c_dev_get_by_minor(minor);
475 if (!i2c_dev)
478 adap = i2c_get_adapter(i2c_dev->adap->nr);
528 * I2C adapters are added or removed, so that each one gets an i2c_dev
536 struct i2c_dev *i2c_dev;
539 i2c_dev = get_free_i2c_dev(adap);
540 if (IS_ERR(i2c_dev))
541 return PTR_ERR(i2c_dev);
544 i2c_dev->dev = device_create(i2c_dev_class, &adap->dev,
547 if (IS_ERR(i2c_dev->dev)) {
548 res = PTR_ERR(i2c_dev->dev);
551 res = device_create_file(i2c_dev->dev, &dev_attr_name);
561 return_i2c_dev(i2c_dev);
567 struct i2c_dev *i2c_dev;
569 i2c_dev = i2c_dev_get_by_minor(adap->nr);
570 if (!i2c_dev) /* attach_adapter must have failed */
573 device_remove_file(i2c_dev->dev, &dev_attr_name);
574 return_i2c_dev(i2c_dev);